Chemical Properties of Eicosanoic acid (CAS 506-30-9)

Eicosanoic acid

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InChI Key
Molecular Weight1
Other Names
  • Arachic acid
  • Arachidic acid
  • Arachidic acid (synthetic)
  • Icosanoic acid
  • n-Eicosanoic acid

Physical Properties

Property Value Unit Source
Δcliquid -12574.20 ± 1.50 kJ/mol NIST
Δf -148.22 kJ/mol Joback Calculated Property
Δfgas -720.94 kJ/mol Joback Calculated Property
Δfus 53.24 kJ/mol Joback Calculated Property
Δvap 83.54 kJ/mol Joback Calculated Property
logPoct/wat 7.11 Crippen Calculated Property
Pc 1123.81 kPa Joback Calculated Property
Ptriple 0.00 ± 0.00 kPa NIST
Tboil 803.05 K Joback Calculated Property
Tc 983.47 K Joback Calculated Property
Tfus 348.40 ± 0.05 K NIST
Ttriple 348.23 ± 0.02 K NIST
Ttriple 347.25 ± 0.60 K NIST
Vc 1.18 m3/kg-mol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas 955.05 J/mol×K 803.05 Joback Calculated Property
Cp,solid 545.14 J/mol×K 298.15 NIST
η 0.00 Pa×s 803.05 Joback Calculated Property
ΔfusH 71.60 kJ/mol 347.8 NIST
ΔfusH 69.20 kJ/mol 348.2 NIST
ΔfusH 69.20 kJ/mol 348.2 NIST
ΔsubH 148.40 kJ/mol 314.0 NIST
ΔsubH 200.00 ± 7.50 kJ/mol 336.8 NIST
ΔsubH 199.60 ± 7.50 kJ/mol 341.5 NIST
ΔvapH 125.50 kJ/mol 392.0 NIST
ΔvapH 114.50 kJ/mol 573.5 NIST

Molecular Descriptors

Joback and Reid Groups
-CH2- 18
>C=O (nonring) 1
-OH (alcohol) 1
-CH3 1

Similar Compounds

lead(2+) heptadecanoate. Lead(II) pentadecanoate. Octanoic acid. Cadmium(II) n-tetradecanoate. lead(2+) octanoate. Nonadecanoic acid. Docosanoic acid. Hexacosanoic acid. Hexadecanoic acid. Barium tridecanoate. 10-Hydroxydecanoic acid. Cadmium(II) n-octadecanoate. Pentadecanoic acid. Tetradecanedioic acid. Triacontanoic acid.

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